https://ma.tt/2005/01/trackback-spam/
Trackback Spam | Matt Mullenweg
Jan 5, 2005 - The flood of truly vile Trackback spam today sadly confirms what I was worried about months ago: if we lock down commenting (with things like WP Hashcash and...
trackback spammatt
https://www.wpbeginner.com/it/wp-tutorials/how-to-put-a-stop-to-wordpress-trackback-spam/
Come mettere fine allo spam dei trackback di WordPress
Apr 15, 2015 - Stanco di eliminare lo spam dei trackback sul tuo sito WordPress? Scopri come fermare lo spam dei trackback di WordPress e liberarti efficacemente di tutto lo...
come metterefineallospamdei